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hackrf_fm_radio_receiver.py
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hackrf_fm_radio_receiver.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# SPDX-License-Identifier: GPL-3.0
#
# GNU Radio Python Flow Graph
# Title: HackRF FM Radio Receiver
# Author: spithash
# GNU Radio version: 3.8.2.0
from distutils.version import StrictVersion
if __name__ == '__main__':
import ctypes
import sys
if sys.platform.startswith('linux'):
try:
x11 = ctypes.cdll.LoadLibrary('libX11.so')
x11.XInitThreads()
except:
print("Warning: failed to XInitThreads()")
from PyQt5 import Qt
from gnuradio import qtgui
from gnuradio.filter import firdes
import sip
from gnuradio import analog
from gnuradio import audio
from gnuradio import blocks
from gnuradio import filter
from gnuradio import gr
import sys
import signal
from argparse import ArgumentParser
from gnuradio.eng_arg import eng_float, intx
from gnuradio import eng_notation
from gnuradio.qtgui import Range, RangeWidget
import osmosdr
import time
from gnuradio import qtgui
class hackrf_fm_radio_receiver(gr.top_block, Qt.QWidget):
def __init__(self):
gr.top_block.__init__(self, "HackRF FM Radio Receiver")
Qt.QWidget.__init__(self)
self.setWindowTitle("HackRF FM Radio Receiver")
qtgui.util.check_set_qss()
try:
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
except:
pass
self.top_scroll_layout = Qt.QVBoxLayout()
self.setLayout(self.top_scroll_layout)
self.top_scroll = Qt.QScrollArea()
self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
self.top_scroll_layout.addWidget(self.top_scroll)
self.top_scroll.setWidgetResizable(True)
self.top_widget = Qt.QWidget()
self.top_scroll.setWidget(self.top_widget)
self.top_layout = Qt.QVBoxLayout(self.top_widget)
self.top_grid_layout = Qt.QGridLayout()
self.top_layout.addLayout(self.top_grid_layout)
self.settings = Qt.QSettings("GNU Radio", "hackrf_fm_radio_receiver")
try:
if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
self.restoreGeometry(self.settings.value("geometry").toByteArray())
else:
self.restoreGeometry(self.settings.value("geometry"))
except:
pass
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 20e6
self.channel_width = channel_width = 200e3
self.channel_freq = channel_freq = 96.5e6
self.center_freq = center_freq = 97.9e6
self.audio_gain = audio_gain = 1
##################################################
# Blocks
##################################################
self._channel_freq_range = Range(87.9e6, 107.9e6, 10e3, 96.5e6, 200)
self._channel_freq_win = RangeWidget(self._channel_freq_range, self.set_channel_freq, 'channel_freq', "counter_slider", float)
self.top_grid_layout.addWidget(self._channel_freq_win)
self._audio_gain_range = Range(0, 10, 100, 1, 200)
self._audio_gain_win = RangeWidget(self._audio_gain_range, self.set_audio_gain, 'audio_gain', "counter_slider", float)
self.top_grid_layout.addWidget(self._audio_gain_win)
self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
interpolation=12,
decimation=5,
taps=None,
fractional_bw=None)
self.qtgui_sink_x_0 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_HANN, #wintype
center_freq, #fc
samp_rate, #bw
'FFT Plot', #name
True, #plotfreq
True, #plotwaterfall
True, #plottime
True #plotconst
)
self.qtgui_sink_x_0.set_update_time(1.0/10)
self._qtgui_sink_x_0_win = sip.wrapinstance(self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
self.qtgui_sink_x_0.enable_rf_freq(True)
self.top_grid_layout.addWidget(self._qtgui_sink_x_0_win)
self.osmosdr_source_0 = osmosdr.source(
args="numchan=" + str(1) + " " + ""
)
self.osmosdr_source_0.set_time_now(osmosdr.time_spec_t(time.time()), osmosdr.ALL_MBOARDS)
self.osmosdr_source_0.set_sample_rate(samp_rate)
self.osmosdr_source_0.set_center_freq(center_freq, 0)
self.osmosdr_source_0.set_freq_corr(0, 0)
self.osmosdr_source_0.set_dc_offset_mode(0, 0)
self.osmosdr_source_0.set_iq_balance_mode(0, 0)
self.osmosdr_source_0.set_gain_mode(False, 0)
self.osmosdr_source_0.set_gain(0, 0)
self.osmosdr_source_0.set_if_gain(20, 0)
self.osmosdr_source_0.set_bb_gain(20, 0)
self.osmosdr_source_0.set_antenna('', 0)
self.osmosdr_source_0.set_bandwidth(0, 0)
self.low_pass_filter_0 = filter.fir_filter_ccf(
int(samp_rate/channel_width),
firdes.low_pass(
1,
samp_rate,
75e3,
25e3,
firdes.WIN_HAMMING,
6.76))
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_ff(audio_gain)
self.audio_sink_0 = audio.sink(48000, '', True)
self.analog_wfm_rcv_0 = analog.wfm_rcv(
quad_rate=480e3,
audio_decimation=10,
)
self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, center_freq - channel_freq, 1, 0, 0)
##################################################
# Connections
##################################################
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.analog_wfm_rcv_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.audio_sink_0, 0))
self.connect((self.blocks_multiply_xx_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.rational_resampler_xxx_0, 0))
self.connect((self.osmosdr_source_0, 0), (self.blocks_multiply_xx_0, 0))
self.connect((self.osmosdr_source_0, 0), (self.qtgui_sink_x_0, 0))
self.connect((self.rational_resampler_xxx_0, 0), (self.analog_wfm_rcv_0, 0))
def closeEvent(self, event):
self.settings = Qt.QSettings("GNU Radio", "hackrf_fm_radio_receiver")
self.settings.setValue("geometry", self.saveGeometry())
event.accept()
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.analog_sig_source_x_0.set_sampling_freq(self.samp_rate)
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, 75e3, 25e3, firdes.WIN_HAMMING, 6.76))
self.osmosdr_source_0.set_sample_rate(self.samp_rate)
self.qtgui_sink_x_0.set_frequency_range(self.center_freq, self.samp_rate)
def get_channel_width(self):
return self.channel_width
def set_channel_width(self, channel_width):
self.channel_width = channel_width
def get_channel_freq(self):
return self.channel_freq
def set_channel_freq(self, channel_freq):
self.channel_freq = channel_freq
self.analog_sig_source_x_0.set_frequency(self.center_freq - self.channel_freq)
def get_center_freq(self):
return self.center_freq
def set_center_freq(self, center_freq):
self.center_freq = center_freq
self.analog_sig_source_x_0.set_frequency(self.center_freq - self.channel_freq)
self.osmosdr_source_0.set_center_freq(self.center_freq, 0)
self.qtgui_sink_x_0.set_frequency_range(self.center_freq, self.samp_rate)
def get_audio_gain(self):
return self.audio_gain
def set_audio_gain(self, audio_gain):
self.audio_gain = audio_gain
self.blocks_multiply_const_vxx_0.set_k(self.audio_gain)
def main(top_block_cls=hackrf_fm_radio_receiver, options=None):
if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
style = gr.prefs().get_string('qtgui', 'style', 'raster')
Qt.QApplication.setGraphicsSystem(style)
qapp = Qt.QApplication(sys.argv)
tb = top_block_cls()
tb.start()
tb.show()
def sig_handler(sig=None, frame=None):
Qt.QApplication.quit()
signal.signal(signal.SIGINT, sig_handler)
signal.signal(signal.SIGTERM, sig_handler)
timer = Qt.QTimer()
timer.start(500)
timer.timeout.connect(lambda: None)
def quitting():
tb.stop()
tb.wait()
qapp.aboutToQuit.connect(quitting)
qapp.exec_()
if __name__ == '__main__':
main()